30956144 has 30 divisors (see below), whose sum is σ = 61027344. Its totient is φ = 15211680.

The previous prime is 30956143. The next prime is 30956153. The reversal of 30956144 is 44165903.

It is a self number, because there is not a number n which added to its sum of digits gives 30956144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30956143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71609 + ... + 72039.

Almost surely, 2^30956144 is an apocalyptic number.

It is an amenable number.

30956144 is a deficient number, since it is larger than the sum of its proper divisors (30071200).

30956144 is an equidigital number, since it uses as much as digits as its factorization.

30956144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 30956144 is about 5563.8245838632. The cubic root of 30956144 is about 313.9898572731.

The spelling of 30956144 in words is "thirty million, nine hundred fifty-six thousand, one hundred forty-four".